Getting rid of plain sql in stats_controller

app/controllers/admin/stats_controller.rb

@@ -2,13 +2,7 @@ class Admin::StatsController < ApplicationController
   before_filter :verify_organizer
   
   def index
-    @registrations = @conference.registrations.all(:joins => :person,
-                                                   :order => "registrations.created_at ASC",
-                                                   :select => "registrations.*,
-                                                               people.last_name AS last_name,
-                                                               people.first_name AS first_name,
-                                                               people.public_name AS public_name,
-                                                               people.email AS email")
+    @registrations = @conference.registrations.includes(:person).order("registrations.created_at ASC")
 
     @attendees = @conference.registrations.where("attended = ?", true).count
     @registered = @conference.registrations.count
@@ -21,21 +15,8 @@ class Admin::StatsController < ApplicationController
     @speaker_fields_reg = %w[with_partner need_access other_needs diet arrival departure]
     
     @supporter_levels = @conference.supporter_levels
-    @tickets = @conference.registrations.find_by_sql("select * 
-                                                     from registrations inner join supporter_registrations 
-                                                    ON registrations.id = supporter_registrations.registration_id
-                                                    inner join supporter_levels
-                                                    ON supporter_levels.id = supporter_registrations.supporter_level_id
-                                                    where registrations.conference_id = #{@conference.id}")
-    
-  end
-  
-  def reg_support(level)
-    Registration.find_by_sql("select supporter_registrations.* 
-    FROM registrations INNER JOIN supporter_registrations
-    ON registrations.id = supporter_registrations.registration_id
-    WHERE registrations.conference_id = #{@conference.id} 
-    AND supporter_registrations.supporter_level_id = #{level.id}")
+    @tickets = @conference.registrations.joins(:supporter_registration => :supporter_level)
+    @tickets = @tickets.where("registrations.conference_id" => @conference).count
   end
   
   def speaker_reg(speaker)
@@ -48,5 +29,4 @@ class Admin::StatsController < ApplicationController
   
   helper_method :speaker_reg
   helper_method :speaker_diet
-  helper_method :reg_support
 end

app/views/admin/stats/_tickets.html.haml

@@ -1,7 +1,7 @@
 .row-fluid
   .span12
   %h3
-    Non-free Tickets (#{@tickets.length if @tickets}#{0 unless @tickets})
+    Non-free Tickets (#{@tickets})
 .row-fluid
   .span5
     - if @supporter_levels.count > 0
@@ -11,18 +11,18 @@
           %th #
           %th %
         - @supporter_levels.each do |level|
-          - reg_support = reg_support(level)
-          - if reg_support.count > 0
+          - reg_count = level.supporter_registrations.count
+          - if reg_count > 0
             %tr
               %td= level.title
               %td
-                = reg_support.count
+                = reg_count
               %td
                 - if @registered and @registered > 0
-                  = "#{reg_support.count * 100 / @registered}% of registered"
+                  = "#{reg_count * 100 / @registered}% of registered"
                 - if @attendees and @attendees > 0
                   %br
-                  = "#{reg_support.count * 100 / @attendees}% of attendees"
+                  = "#{reg_count * 100 / @attendees}% of attendees"
     - else
       %p
         No tickets sold yet